Mud-lugs for automobile-wheels



F. W. M cGINN.

MUD LUG FOR AUTOMOBILE WHEELS.

APPLICATION FILED ocT.2o.1 92o. RENEWED SEPT. 3, 1921.

- Patentefl Oct. M, 1921.

m a I A I N VEN TOR.

ATTORNEYJ.

- improvements in traction devices for auto FRANCIS W. MCGr-IIE1\T1 T, OF BALTIMORE, MARYLAND.

" Mun-Lees ron AUTOMOBILE-WHEELS I Specification of Letters Patent. Patmt-gd wctg, 11, 1921L Application filed October 20, 1920, Serial No. 418,144. Renewed September 3, 1921. Serial No. 498,535.

T 0 all whom it may concern:

Be it known that'I, FRANCIS *W; MoG-mrr, a citizen of the United States, residingin the city of Baltimore, State of Maryland, have invented certain new and useful Improvements in Mud-Lugs for Automobile- Wheels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 7

This invention relates to new and useful mobile wheels,and particularly to mud lugs therefor. i

One object of the invention is to provide a locking device for one end of the chain, which is carried by a lug, which cannot be accidentally released by external pressure, but which requires the proper operation of the lever to open the look.

It is a further ob ect of the inventionto provide a mud lug that will notonly be eif1 u cient in use butwhich as an article of manu- 2 5 facture, may beproduced economically as by drop forging and which will effectually withstand the excessive strains to which an article of this kind is ordinarily subjected. 1

Other objects and advantages will be apparent from the following description when taken'in connection with the accompanying drawing. 1

In the drawing:

Figure 1 isa sideelevation of a mud lug made in accordance with the invention, and

shown in connection with a portion of an automobile wheel. i

Fig. 2 is a vertical transverse sectional view through the wheel and tire, on the line 2-2 of Fig. 1, showing the lug and locking means in elevation. v

Fig. 3 is a perspective view of the locking device.

Referring particularly to the accompanying drawing, 10 represents the rim of a wheel, on which is secured the tire 11, and in connection with which the improved mud lug is used. l

The lug includes a base plate 12 which is transversely and longitudinally arched to snugly fit on the tread surface of the tire 11., and formed integrally on the convex face of the plate, and extending transversely of the plate, is an outwardly projecting flange 13, the side portionsof which extend outmetal block 15, one end of which is bifur- 1 cated, as shown at 17. Through the other end 16 of the block is pivotally engaged the link at one end of the chain 14 while within the bifurcation referred to, is pivotally mounted one end of the locking lever 18. hook 19, which is bifurcated at 20, is dis posed in straddling relation to the lever and is'pivotally connected thereto at 21. The other end of the arched base plate12 is bent outwardly and upon itself in theformation ofa hook 22 to detachably receive the securing hook 19. r

The parts 15, 18, and 19 are so connected together that when the lever is swung on its pivot into the position shown in the sectional View Fig. 2, said lever will snap past the center of the pivotal movement thereof andthus draw the adjacent end of the chain, and the hook 19, toward each other, and place the chain launder tension.

Under ordinary circumstances an inward pressureon the hook 19 and the connections with the block 15, and the lever 18, would cause the breaking of the position of the parts and permit the lever to swing out wardly andthus release the hook 19 and the It will be understood from the foregoing and readily recognized that the lug itself maybe economically made, as it is capable of manufacture by drop forging, while in use it has extreme durability. Furthermore, the attaching means is in the plane of the flange 13 and is so constructed that the. arched plate 12 is held securelyagainst rock.- ing through the medium of a single attaclr ing or securing chain. 1

What is claimed is: A locking means for the mud lug of an automobile wheel comprising a flexible elepivotal movement of the parts when inward ment connected with the lug, a block pivpressure is exerted against the said parts. 10 otally connected with the flexible element, a In testimony whereof I aflix my signature lever pivotaliy connected with the block, and in the presence of two witnesses.

a hook pivotally connected with the lever FRANCIS XV. MGGINN. and engageable with the lug, said bloekhe- Witnesses: ing formed with a nose for engagement with JAMES A. Some,

a portion of the wheel to prevent inward M. V. STONELL. 

